Like the rest in the Pocket Operator series, the Teenage Engineering Pocket Operator Sub is a bite-sized, calculator-shaped minisynth that's great for on-the-go, on-the-fly synth sequencing or arpeggiation. The PO-14 Sub is a bass synthesizer, containing 15 synth bass sounds (and even a drum machine!), totally tweakable with any of the 16 onboard effects, like delay or bit crush. A 16-step sequencer complete with pattern chaining rounds off the key features of the Pocket Operator Sub. It may be small, but its sound isn't!